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MS303-1980 


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A  SELECTIVE  MICROFILM  EDITION 
PARTI 
(1850-1878) 


John  Deasey 
Leonard  De  Oraaf 
David  Fowler 


Susan  Schultz 
Assistant  Editor 
Research  Associates: 
Robert  Rosenberg 
W.  Bernard  Carison 

Pamela  Kwlatkowski 


Barbara  B.  Tomblln 
Leonard  S.  Reich,  Associate  Director  and  Associate  Editor 
Reese  V.  Jenkins,  Director  and  Editor 


Sponsors 

Rutgers,  The  State  University  of  New  Jersey  ' 
National  Park  Service,  Edison  National  Historic  Site 
New  Jersey  Historical  Commission 
Smithsonian  Institution 


University  Publications  of  America 
Frederick,  Maryland 
1985 


nlsslon  of  McGrawEdlson  Company. 


BOARD  OF  SPONSORS 


Rutgers,  The  State  University  of 
New  Jersey 

Edward  J.  Bloustein 
T.  Alexander  Pond 
Tilden  G.  Edelstein 
Richard  P.  McCormick 
James  Kirby  Martin 
New  Jersey  Historical  Commission 
Bernard  Bush 
Howard  Green 


Roy  W.  Weaver 
Edward  J.  Pershey 
William  Binnewies 
LynnWightman 
Elizabeth  Albro 
Smithsonian  Institution 
Brooke  Hindle 
Bernard  Finn 


EDITORIAL  ADVISORY  BOARD 

James  Brittain,  Georgia  Institute  of  Technology 
Alfred  D.  Chandler,  Harvard  University 
Nell  Harris,  University  of  Chicago 
Thomas  Parke  Hughes,  University  of  Pennsylvania 
Arthur  Link,  Princeton  University 
Nathan  Reingold,  Smithsonian  Institution 
Robert  C.  Schofield,  Iowa  State  University 


CORPORATE  ASSOCIATES 

William  C.  Hittinger  (chairman),  RCA  Corporation 
'Arthur  M.  Bueche,  General  Electric  Company 
Edward  J.  Bloustein,  Rutgers,  The  State  University  of  N  J, 


FINANCIAL  CONTRIBUTORS 


PRIVATE  FOUNDATIONS 

Alfred  P.  Sloan  Foundation 
Charles  Edison  Fund 
The  Hyde  and  Watson  Foundation 
Geraldine  R.  Dodge  Foundation 


PUBLIC  FOUNDATIONS 
National  Science  Foundation 
National  Endowment  for  the  Humanitie 


PRIVATE  CORPORATIONS  AND  INDIVIDUALS 


Alabama  Power  Company 
Amerada  Hess  Corporation 
AT&T 

Association  of  Edison  llluminadng  Companies 

Battelle  Memorial  Institute  Foundation 

The  Boston  Edison  Foundation 

Cabot  Corporation  Foundation 

Carolina  Power  and  Light  Company 

Consumers  Power  Company 

Coming  Glass  Works  Foundation 

Duke  Power  Company 

Edison  Electric  institute 

Exxon  Corporation 

General  Electric  FoundaUon 

Gould  Inc.  Foundation 

Gulf  States  Utilities  Company 

The  Institute  of  Electrical  &  Electronics  Engineers 

international  Brotherhood  of  Electrical  Workers 

Iowa  Power  and  Light  Company 

Mr.  and  Mrs.  Stanley  H.  Katz 


Matsushita  Electric  Industrial  Co.,  Ltd. 
McGraw-Edison  Company 
Middle  South  Services,  Inc. 

Minnesota  Power 


New  Jersey  Bell  Telephone  Company 
New  York  State  Electric  &  Qas 
Corporation 

North  American  Philips  Corporation 
Philadelphia  Electric  Company 
Philips  International  B.V. 

Public  Service  Electric  and  Gas  Company 

RCA  Corporation 

Robert  Bosch  GmbH 

Savannah  Electric  and  Power  Company 

Schering  Plough  Foundation 

Texas  Utilities  Company 

Thomson’Brandt 

Transamerica  Delaval  Inc. 

Westinghouse  Educational  FoundaUon 
Wisconsin  Public  Service  CorporaUon 


PUBLICATION  AND  MICROFILM 
COPYING  RESTRICTIONS 


Reel  duplication  of  the  whole  or  of 
any  part  of  this  film  is  prohibited. 
In  lieu  of  transcripts,  however, 
enlarged  photocopies  of  selected 
items  contained  on  these  reels 
may  be  made  in  order  to  facilitate 
research. 


A  Note  on  the  Sources 

The  pages  which  were  microfilmed  forthis  collection  are 
in  generally  good  condition  in  the  original  There  are 
some  pages,  however,  which  due  to  age  are  lighter  than 
normal.  Additionally,  because  some  volumes  are  very 
large  and  have  been  bound  tightly  and  cannot  be  un¬ 
bound,  there  are  intermittent  occurrences  of  slight  dis- 
tortion  of  the  edges  of  a  small  percentage  of  the  pages. 
We  haye  made  every  technical  effort  to  ensure  compete, 
legibility  of  each  and  every  page. 


mm  m  nun  t  busk  book  morns. 


WILLIAMS  &  PLUM, 


mof  Mr.  C.  W. 

in  Electric  Light  Company,  at  UMr  cxiierfii^tnarmLTOf ,  ; 

Gmy’s-inn-road,  London.  In  this  lump  carbon  rods  gin.  ! 
diameter,  and  placed  vertically,  are  used,  thopositivo  being  : 
e  top  carbon  and  the  negative  the  bottom  one.  Tho  adjust-  j 
ml  is  stated  to  be  automatic  and  not  to  consist  of  wheel?,  ; 
rings,  or  any  similar  clockwork  arrangement  whatever,  i 
lint  this  adjustment  docs  consist  of.  howover,  is  known  : 
ly  to  the  inventor  at  present,  particulars  being  withheld  1 
>iu  the  public  in  consequence  of  the  foreign  patents  not 
ving  been  quite  completed.  Tho  light  is  a  good,  strong, 
d  steady  one,  and  on  thu  light  being  extinguished  through 
v  accident,  contact  is  instantly  renewed.  Tho  light  is  ! 
out  to  he  employed  at  collieries  near  Manchester  and  in  ; 
mtli  Yorkshire.  Thu  inventor  claims  to  have  solved  tho 
icstiotis  of  divisibility  of  tho  current  nud  modification  of 
c  light,  and  ho  projioscs,  after  tho  foreign  patents  shall  i 
vo  been  secured,  to  exhibit  a  number  of  lamps  suituhle  for  ! 
ihlic  and  private  purposes.  Drawings  wero  shown  illus-  ; 
iting  the  principles  of  tho  proposed  method  of  street  illu-  I 
illation.  This  consists  in  tho  point  of  light  being  placed  I 
tho  haso  of  tlio  lamp  standard  and  directed  up  tho  iuterior 
tho  lamp  post,  on  tho  top  of  which  is  placed  a' circular  re¬ 
ctor,  by  means  of  which  tho  light  will  ho  reflected  around.  .' 
icro  wore  other  modifications  shown  which  will  ho  host.de-  ■  I 
ribedwhon  tho  principles  of  tho  invention  arc  niado  known. 

10  company  aro  manufacturing  their  own  carhous,  which? 
o  understood  to  bo  made  by  a  special  process  to  insure! 
liforinity  iu  composition  and  so  to  conduce  to  Mcadiness  of  j 

OBSTACLES  TO  THE  SUCCESS  OP  EDISON'S  SYSTEM. 


«£<<  c£. 


~S>  t> 


TIIK  ELECTRIC  LIGHT.  } 

kiustbsts  nrc'  In  progress  nt  (lie  North  f  Shore  { 

3.  under  Uio Scan-  r' 
Is  SidnfriSl  to  ft  glol»ljnStl«aUyj 


jn  n  horizontal  iKuitlon,  and  nivotted  to  a  nlldlmr  nicco  on 
Imr.  In  onlor  to  iUITuho  tho  light  more  offoctimlly,  nn  oj 
upward  ujjoh a broaiftldlccK fixed Sovotl”  decflffio*.' * 


?trSy!dmiU  °f  1  L0,nl>lct08ulKllyl  Jjwoj 

***,] 

KCTRICA  I.  TUI. KM KTtlt.  —Ill  jflfrfffis 

><lbv  ar.  G. Lo  tho  French- 


I  In  iU  vviscl.  causing  tiio  Urpiid  to  llw  thorefrom  into" tho  I 
j  thereby  raining  tho  second  putou  with  tho  lower  carbon. 


mOBMjunWtX  AN  AKERICAH  W7EHTI0H. 

,  wiilcli  ivna  operated  at  Ilia  Berlin  Exhibition  I™  jaVlL  | 


is  much  ns  tho  gas  lighting.  It  mi 
•or,  that  iu  tho  new  Heading  Koom, 
>t  high,  it  will  bo  necessary  to  have 


TheJ EJectrlc ,  Light  for 'light”  Houses,  f 


aiiious  Intensity. 

ipcctlng  lW  first  category,  tlio  report  nullcca 

IcclrJo  nrc,  (ft)  by  Ignited  conductor*,  and  (r)  by 
ilcscciit  gasps.  Inspecting  tlio  olcctrio  nrc,  the 

ro  gradually  consumed;  and  tlio  point .  Is  made 

Ihcta  causes,  tboy  cannot  control  tlio  accidental 

i  them  to  wear  away  unequally*  and  by  reason 
cli’tlio  aro  sldfUi  It#  position  "giving  rUo  to  fro- 

llgiit  that  it  einits.  ; 

report  refers  to  corinin  observations  on  lids 


.however,  Is  appended,*  as  n '  qualifying  clause,  I 
'.aincojtbo  great  Improvements  recently  made  in  I 
nuogcnoi ty  or  tho  carbon  jiolos,  and  In  tlio  regu.  I 
nmcliinory,  niid  slnco  tlio  Introduction  of  rofloc- j 
bo  ciectrlo  aro  Is  no  longer  loo  unsteady  for  prac- 1 


of  carbon  cut  from  tlio  retorts  of  .i  gasworks  in 
tlio  electric  light  was  Mr.  Golding  Bird.  In  a  lei 
Philosophical  Magazine  for  January,  1838,  dose 
-  new  induction  coil,  ho  expressly  states  tlmt  ho  got 
,  I  brilliant  spaAi^from  electrodes  of  this  material. 

saava-a.  y 

ever,  that  he  has  now  succeeded  in  devising  a  j,I„, 
the  incandescent  matter  intact.  It  is  to  oxbnis 
wng  vesso  to  a  high  degree,  at  thosaino  ti„W  riii 
payjion  to  ns  high  ora  higher  tditiponituro  if  possibli 
1  eo.  ikCV'  ,llcr“flor1to  1,0  oobjoctod.  Whilst  id  this  i, 
S, .%  “■«!»«  containing  vessel  'is  horn 

Ireut.  Xliero  aro  at  iiresent  twohiy-oue  lights,  work 
&usli  dyuaiiio-mucbino,  tlio  wliolo  supplied  hy  the 
American  Electric  light  Company.  Tho  machine  is 
hy  n  10  horse-power  portable  cugiuo.  Two  rooms-tl 

H?  room-aro  full/  lighted'  hy  t 

1  shls’  jrt'ty  °“>??  aro  only  partially  lightad'.  Hi 
ho  cask  room  lias  been  Hghiod'by  tliirly.flv'o  gas  ligl.l 
|  these  aro  rcpljicod  by  two  eleclrio"  lamps.'  Mr.  ii 
;  reported  to  ho  fully, satisfied  with  the  experiment'.;'  I 

ELECTRICIAN,  SEPTEMBER  iT] 

L i , k ct r i c  vL a ji ra. — Mr.  Patrick  T)rnw  ~ 


ELEOTBIOI  AN , "SEPTEMBER.-!!  j 

:  Swan’s  fI#AMP.^At  .tho  ‘tinib  Mr.  Edison  brough 
lamp;  it  wus  stated  that' Mr.  SWau  of  Nowcaatio' lin'd1 
triedm  similar  plan,  and  found  it  a  failure.  Ho  stal 
over,  that  helms  now  succeeded  in  devising  a plai 
tho  incandescent  matter  intact;  It  is  to  oxlmust 
tnining  vessel  to  a  high  degree,  at  tlio  same  tiino  ra 
carbon  to  ns  high  or  u  higher  tempernturo  if  possibl 
is  likely  hereafter  to  bo  subjected.  'Whilst  in  this  i 
cent  stato  tho  exhausted  containing  vessel  is  hen 
scaled.  This  operation  is  said  to  obviate  tho  failui 
carbon  by  disintegration. 

Burton-on.Thent. — Messrs.  Bass  and  Co.  havo  in: 
tho  electric  light  into  their  extensive  premises  at  Bu 
Trent.  Thero  are  at  present  twcuty-ono  lights,  wor 
Brush  dynamo-machine,  the  whole  supplied  by  tin 
American  Electric  Light  Company.  The  mackiuo  i 
by  a  10  horse-power  portable  engine.  Two  rooms— 
jolReo  and  tho  square  room— arc  fully  lighted  by 
lights,  whilst  other  parts  are  only  partially  lighted.  ] 


LHE  METROPOLITAN 


'  Z'  _ I 


THE  METROPOLITAN 


I  R  O 


jins  many ^  Seeded .  advantagcs|wh’ich^ mm^Sfosccurc’ 


THE  SANITARY  ENGINEER. 


[December 


WESTERN  BIVEB  STEAHEEo. 
■I.o  eloclrlc  light  lsclc.Ul.«l  10 
Inml  navigation,  particularly  on 


lawp  bdS  tbc  Society  ol  l-vH-mpU  Eu8mccrs  on  on  oa 

IlfflliSaSP 


OcZt  CA'  j  j 

ngo{  the  Chat ing-cross  Station  of  the  District  Op  1 1 
^  the  electric  lightfor  the  first  time  took  place 
he  District  Railway  Company  in  fighting  their  /J*  . 
j^icjoria  by  the  JaWhkoff  candle.  .This  ex-  . 


tanager  of  the  Societe*  Generate. il'.EIectricitv, 
sir  W.Jtewelt,  Sir  W.  R.  Robin  so  n.^and  Dr. 

atent  rights  in^l .^ablochkofljs  indention,  f^r 
>t!y  introduced  insures  the  lights  against  the 


!  pty  Siompim  lms  written  a  iring  loiter  loj-HVm.  7V 
;  j  rpjtly'to  Mr.  Precco’s  communication-  on.  t It ti lijoct 
'  danger  of  tlio  electric  light,  lo  which  wo  alluded.  Inn 


j  direct  raTorcmVi  to  tho  present  ngi  I  at  ion  tm  tho  groat 
!  nml  fog'qncslioli.  Utv SieinonsniqintH  out  that  iii  t' 
of  factory  f  uYuh&MllibrVSp OuKhiiigur  any  excuse  | 
cousttmptiou,^fueLJft  such  a  iminnAt*  ns  Intend  forth 
.front  tlio  eh/toiicy8,Htb‘|ty  tho  /noro  njhijjtwti  of  gas  lit 
j  smoko  is  not  so  MuctNronHuu^l^m^£{^^&totiU‘d 

'■  advocate  tho  uso  w  gas  .fires  tlprm /t-^c  douimdio  ! 

kept  in  uu-iiiciuide.seonl  stato  hy  u  gdu-ihuiui^rnui  lumen 
in  n  comliitmtion  of  coko  mid  gas  with' tZImlid  pinto 
tilled  for  it  liru*grnte.  ''ttiO  gns  is  iipwli/tUii  tly*Aok</{i 
front, mid  Dr.  Siemens  oxfit-rwMiiin.syll  lay t ] u/tdi^l 1 1 j-%i 
with  this  arrangement,  wliioh  ho  uses  tn  his  own  Ifnun 
comhination  is  not  new,  having  been  introduced  nearly 
years  ago,  somowhero  ahout  tho  timo  when  Dr.  Siomci 
ho  tried  fo  get  a  Jlilt  through  Parliinciit  for  supplyti 
'in  Ingham  with  heating  gns,  in  which  ho  failed,  as  ho 
in  consequence  of  (ho  opjioslt ion  oitcml  hy  tlio  loc 
Companies.  Wo  tlo  not  hero  wish  lo  mko  tip  (ho  nsht 


>st  of  the  light  as  compared  with  its  rival, 
trie  Company  state  that  it  shows  a  saving 
cr  cent.,  each  electric  lamp,  equal  to  1,000 
dies,  Costing  2 jd.  per  hour. ... 


reality  from  its  own  weakness,  or  it  wonhl  as 


-  comE  KMllKlitlngappAro.! 

-KtteliVe,i*  °f  2h OOO  wmll e.  cftj.ai,]” 5' ]f ^ U  U * 


REVUE  DES  TRAVAUX 

KUCENTS  EN  ELECTRICITY 


trcpnscs  par  lui  A  dlfilVcntcs  dpoqucs  depulsvingt 
hbtoriquc  pnbcntc  un  r<Scl  intOrOt. 
scs  premieres  experiences,  it  employait  unc  spi- 


ii 


•|®$' 


JkjLy  l/u^/fe.)  M>te.i<f, 


May  &  18S2.' 

METROPOLITAN 


lose  inti.  raiion  in  rccor  jiT'irM'our'o  !n?‘"r’  "c  have  m  hul-  I  ' 

ESl,  S&SS^SriSSS 

on  Mon.  illumlnnnt  for  hdu.olmldpurpo.L  ''"'  >nd  cc°"°mi«> 

agig 

'SiHo'  I'.Vy’i’n.l  Wno  ’!  ”">n  Is^'s  c  c“o! 

li'i  ^H^orno* J  Wnn't'V'ri  ifh  tTnPc  "  h*e  Vi'™  L'rci'.  j 


guucvttau  @|ts  iEight  gjmtmtrt. 


result,  it  I;  Ma  Edison  to  he  a 
andle  Edison  is  reported  ns  l»w 


having  rocontly  snid  tlio  following  to  a  representative 


sept.  17,  1883.I 

^mrfcjtu'fejggrtt  amu-uai. 

MWBT  tiib  Qiuiiub  Euwnuo  Compahi.— In  tt«  W  of  'tlio  'ammm.ri 

ra£S^ 

*m  lately  rniihro)  by  Judge  “S",’1 , 


SEPTEMBER  23/  1882 
THE  TIMES,'  • 

T1U1  KLXOTIUO  LWUTINO  ACT. 


c  hicly  rendered  by  Jnd^BhtebfS"' “h^EdnnhT  “nTnS  '  SI  ZZ  ’"'I/;?110;" 0P  ™ 

ajed.  mo  dato,  and  in  (his  vlour  Judgo  Batchfonl  u‘hed  to  tt*htlag  their  dJ*trio»  by  elec 

j  ■  Hj««eUoo  SoItboAoi  of  tut  Bewli 
roinNwa  Enters  an  English  Coal  Mist-Tho  NowcasUo  ChroniTit]  ^!”*-  **"  ***  jort./ apply  to  th 
»  that  0  most  ttmuiui)  and  extraordinary  occuronco  look  place  at 

ton  colliery,  Newcastle,  Englnud,  during  a  severo  thunderstorm  •uthorittoTTat  thu  daall«  ^ 

io  electric  thihl  sccnicl  to  strike  the  west  winding  ropo  of  11, u  wml  !:  tta.to  j«„,  .bleb,  nnls, 

■  olovalcd  position  upon  Ibo  paltoy.  Ono  onrronf  pnMol  dmm  i,„(1  -Ul  proUbly  msta,  1 


10  oicctno  Situ]  seemed  to  slriko  tbu  west  winding  ropo  of  thu  west  nliiift  '■  ****  “™  7“».  -bleb. 

1  olovnM  position  upon  Urn  pnltoy.  One  onrronf  pnssol  .1mm  i„t„  tl,„f  f"”1”'  "W  probebly  m. 

,,ow"  r  u,. 

pou  the  iron  tint  shoola  nt’ISo^tom?"  JI^  hLuiii' bln lujin  u^ral”!!"  I  ,m  “”t  “”‘1“^X',CS 

WUlBUt  MfMuiTtP  tlK>C-k’  l'"1  ”*  blimlwl  bJ  HlO  Ilmll  for  W«J  ths L^ithoriU°J"'2o'",|l  h..o  notice  bn 

I,u“i’-  n^iti-mgrb^nlgT,;  ISS ^  JiMS 

SSSr 

o^TJrr^-  A!,er “rC,Ul «“-*>Uonot thofmnes 'IT  ^SntSWa'r/*4' 

___  j1 pwri^tygaa 

•  i|,““.w”t™mCtnbsi°ln^1«nort,'l'%er*iLrtS 

,  .  •Pst-!UM,;  Se@U&25e^BS 

^mcritnn  ®ns  gijht  Journal.!  IS''S“VjSSS£® 


’ '«> the EDiroitoriHB tiue3.“ >  -  j THE  TIMES/ 'FRIDAY  nfrmwro  r 

ib,-itcuuoibideni»ati.t,W.bi.«ti,iiof  Mo».  ^  J : >) ;■ t *■?,  UttiLK  G. ,  1882. 

•'  ’  inmisoT::  -  ;  - ^ 

aI1  U'e:r  owa:  TO  THE  EDITOR  OF  T1IE TIMES.  .  '  • 

Jlctto  “cwtd  wlKimptto ^2diH^S,ll“uC,,S  1  l/re  l"1"  Ulb  1“““™  from  Ih.  pobllc  »lew, 

m^Ucim.0 oVIealbaabla  u  tbon’ .  mUtaiTio  tbrij >^l*m °' plU'to  bi Tbo'tiSufa 
Although'  I  Wlj.’twlproal.  tho  «I.h  txpreotd  bjj  Act  Wore  ij,  ta°M[„  *.  iTm  H^htk 
tlnlallllci  to  tho otmott  utont eoulilaitvtth  omta!j  thoro  iiill  W ^ont^loTiiS^ran,” 

**  ‘“*W  ^  U‘”Bc*rf°' 


B  f  0^£5iPM-  -  ........  .  _  uojto,  01  eicctricnl 

xr/r  hBi"',;s'b“'  E  «"*  “  x1 as  i,1” -r  T^"b‘- 

,™f" ” h"° “ compos, „d 8t,0IIUV  b» Mr.  Edl„„  °°  No.  V„,l  f  ")“1'1° 
ther,  orerUp  oho,‘;  fbooctuol  thing.  Ifhrrfne  l„  ,h.  1*,“^*“  {’T 

i ta*  c  *sy* “  to  i  .»"£ 
fflyfe^SSSsasSI  3,-s?.r  ™r°* *» «« 
=ssS§g^5aSs:Ss3Ss^siS 


SATURDAY,  SEPTEMBER 


THE  £DAII  >  NEWS;1 

oMho 


ItptUined  ^jjjr  .  tbj.  J&U^ti  U^^n, ; 

varllllou' ! 

o!««frw,  Wi  llio  VlnJwit  jij  for  u»C ^iiuctlod  i 


saasrcea 

s ssvs^&sm 

igjffgfefy TfJyfeU'WKit^  thoroCQCuiwJ 

“fP  Aal  #n  attract  of 

2S&  *  proV"od  h* -wCoIouol  Harwood  at  tho 


jm*mn  ®as  gmtnmt 

.  INCANDESCENT 'LIGHTS  IN  NEW  YORK. 

|  Wo  oro  informed  by  tbo  officer.  of  tbo  Now  York  Goo  Light  Compm,y. 

:  partly  supply  tbo  dowu-lowu  district  with  gus  where  tbo  l?.ll.~. 

'  (110)  olio  hundred 

|  1882,  tboy  coiisumod G18,OOo!!^^ 

;  day  trill  somotimcs  inoroooo  tbo  miml-outnu  lwrcmittvnr  IS,  7  ”7, 
in  o  clear,  bright  day.  1 11  W0I,“> 

goodly  quantity  of  gai.  »oci»h  to  U  needed ;  and.  if  ruinon,  nr.. ^  „A 


;  ibills  werosoui  round  to  Uio  electric  ,  no  bfihtiug  bills.  Soiupl, 

ii Lot  farTmvmonMiut  Z  . W  7  ?  T.T”’  f°r  U»  mouth  of  Dccernl 
r|  'l,1”'-’"  :  "l .  ‘‘mw  "1,out  »1“l  ‘bo  cost  of  tbo  now  light  would 

;  ta  <™‘*  *bw  ™st  oinouutod  to  shout  tbroo  tinioo  tbo  uric , „7  T>  , 

!.  formerly,  liesidos  tbo  cost  of  gos  used  nt  prosonL  '  ”  U‘° 1 

I  °f  ooutso,  ,tho  prices  charged  for  cleotrio  light  nro  stihicct  ♦ 

1  from  time  to  time,  nnd  tbov  will  i,.„  i„V  ,  “'"’loot  to  moiliflcoUi 
!  or  tboy  will  not  mo  tbo  light  -“•sfootory  to  consum 

d«MMoX7r^lt'll?1H''1  °fmn,ini'  “'bllo  power  of  tbo  i„„ 

.  jra&ss: E£r*  sr,iK“ 

Ml  volumoof  light  which  ‘“yWSll  jsilu01  1 

difficulty,  but  it  la  one  that  will  ™ .  1  pIy'  T,1«>  wot  n  in 
bor  cf  renewals  of  lumps  noccmu^  to  givo'tifo  omT"1”  '""""‘"If 
working  tints  fur  would  mtber  X  to  diow  tl  ut  Dr'' fl ”  w  <’L“KH  Tl 


■Sttttitw, 


June  i6,  1882.  &wmc;m  (gas  gight  gmtrnal 


L7au.j,  ,s8o  [Jan-  Joi  1883'? 

'^¥™1  ©»?  gjgjtf fottWRt. 

''r  a,!,c'1  n“:ou"1  of  Ws  labours  with  I  '  ®“  Vfl-  Elootrio  Light  in  Down-Town  Storos 

luillB  Mr  Ed'  "s'  wl"<"oly  slcocrlbln-r  the  ;  ■  ' 

a  carbon  framework*!’  ™a,l||,“-,“*  l™1'  "l0  lA  C".7M.P?.n,,0."t  ot  1110  Unitary  Xnglnccr.'vhatlmj,  himself  . 
:c  for  incandescent  lighting.  A  tto  £Li“  f“  “  10  c,Io™lg  communication  to  that  publication: 
is'in'te'fo"  "  “  “•  soluble  1  Dear.  Sir--r«lin,»  11,(1  following  .lahmmut  olmut  11, „  conr^Uvo  c 

I  onc-ciglnb  Hide.  A'nu”bc,r0ofC1|b°2  jjjf™  'Slh  ™|n£Irt  J'®  E'  A  Q 

CwnS™°tZ“mo  "f “'rorl 
££• pawowi^ 

“Si£f * «» counU„8.„ 

ffasr.  rjriisS  & 

d  rrEiL-,1'  "°'V  Tbe  >  tho  electric  lamps.  Under  thcao circumatnuocs  oftalommiU  ?  ,"‘"'1 

=SSir 

is  1; 

}‘  h  briefly  dLii;^ '■‘-lied \V  U.o  Mutual  Co!„f„ m,,“  “S2,  IXS  I>Cr  tf'  ^  8"" 

:  fX'"  ,,cl8l,,i  “"■<  »  Indies  i„  feme  *»'»<».  ln»  »i  illmuhiEl™  “,0  ""taaoiit in tl 

n-CCr  '-wm  «  coi 

>Mly  between  the  m,™  n,f$.C)'llmlcr  •  .Now»  mumming  tlmtOof  Uio  7  olootrin  lnm«-  \  • 

ifr'ssaiS,31! 

«'a'».0c=ns,n,eup0rl 

Silfelisitemaa; 


mo„t  fli,„|L,  hiCdng^”  7r" liBht'^!,  f^M>,icri. 


«  .  Jw-2,1 88+, 

&SS1 1S2  bSf!  Swwat 

imt  io'f™C,0lllI"B  1110  E'1'"""  Elcclrio  Linlll'como!!,1!-  U‘"° — Mr. 
1,  .  ”  conil,n"J'  for  (bo  '"Kngo.1  in 

ml  light  nt  Cliillic . .  01, io  TlroWi  i  .  .  Ellison  in- 

'  boon  placed  ht  geo, 000.  '  '  1  1,1  “lock  ihoproposed  com. 


!iis 

Balcarro.  at  a  nwolFng  of  tlm  ahnml.Sd  °  °r^7'  "'  “,  Inll,u,'rJ'-  “na  lhe  lm 
ctric  Light  .nd  Po»trSComlf  7fiH,',"  ,of  H10  ordmingahhcd  gu 

mant  is  that  nan |?,i Li ‘°  Mtro?««n“r/ fact  in  Kingdom,  bui  In 

itaint  uZ'^r'r  *°MlZloln  At  thifumo  'k'giihcd™  ’’tSTc^ 
tor  di»»pUntmc"‘0hntMmSaVTr““b'0t°  °bl"in  "I,lc In,e™“" 

wore  Llod^trL™,,0^ j'z 


meeting,  tho  chairman  wna  careful  1  i  I!  T 

coSr^Knt”  fi  ^  WSS  ! 

SSSSa^*?- 


\\April  28,188 

mature 


_ r  -  -  -  -  -a  __ 


in  :: 

Ifgg 


4C. 


mgATHER^ 


SYSTEM  OF  ELECTRIC  LIGHTING 


THE  LAMPS. 


THE  GENERATOR. 


Hjk  ■ 

rtM 

yimllSDl 

\> — jljjLp — M 

ffisSD 


the  CROMPTON 


-SCIENCE 


isss 

^P^35S^4r5^SS 

■,™,'°,""'1  “Winnl  feature  of  Iho  »y.tom  "fS  ]"?.ot  {°'lr\ri^  tiro 

SKsS 

i  •  Lon  tin,  consists  of  two  distinct  I1!0  .co»mmtntor  nt  o 

)  nil  electric  generator  whoso  mairiiotin  n..V.i °^*  nUonmlo  and  ror 

aJiioed  by  powerful  eleelroonnen^vaSj  wW  ”  '1-'”  otl!cr- ‘I 

issijte’iiii  w  ssfagjsf'Ssssct.  at 

ici^tbe^r/u:^'  T,&  c,wu™;ilSit„t.r  HI  I ; 

aisis£asgs,w  : 

ho  Maxim  nmchino  which  wo  illnstrato  bv  FiV  i  r 

fn^oh^”i°thon^ngcincnt  of gj *£*  °,f >  ^ '  *  j 

“u  ‘i?  ?  fro,n  “  0  *> «  «  ■  omcl.i.m  j  t|,„  V  a  biloD„’.*Tr 

rail  of  being  in ahVrSrm  o?  ^"Sbi^S'i'l1'''''''0  ."'ll^l‘  comlucUnfr  pe 
"K  W  various  wire  SS  rcyircl.  On  each  oUe 

i  from  ono  side  to  the  other  is 'in  tlm  fnrmnt  .w  n  Ending  acrow,  wli 
alrical  ring  or  »<W>U«lr-»o  A.  ( 

■tuuinally  iimirio  ami  ontaiilo  Ilia  ring  “a  in  u„  ;  '?rc™'mutalorortotbo 
nme  armature  orwbiei,  it  i, a  moibfention ;  buf ;O  o  D  f„l’i!rH!:'r""11 1 
Ttrs  from  tlio  Gramme  nrmaturo  in  tho  fact  o  liiifUii  ,|?.n.p? 

its  longth  is  considerably  greater  than  its  tl,\v„  I,1Inro  »»«dated 
etor,  ,n  other  words,  that  It  la  mtl.or  in  the ^u^oT.lJ "nf  ?  ,I,la?h,"o  cn 
lhLn  rUb°  "I™  of  n  rin»*  11  n]M  diffc 

tlio  ordmarv  Gramme  armature  in  bavin- two  (  -k  ‘  - h>’  r,,,nl 


EDITORIAL  NOTES. 


SCIENCE 


U,ST2£ZJ?£  TUE  applica  tion  of  the 

ELECTRIC  LIGHT  TO  LIGHTING  THE 


:>'V>  'X 


ELECTRIC  LIGHT. 

THE  JOURNAL  OF  ELECTRIC  LIGHTING, 

,  bLrD  0«,KVEKi.0NS.  mPnOV^TS.  »»0  COHI.ENT  EVERTS  «  CONNECTION 
.  |  ,  .  ■  WITH  THIS  BRANCH  OF  SCIENTIFIC  1NDUSTR  •  _ _ 


INTRODUCTORY.  . 

Tit  general  adoption  of  electricity  as  a  lighting 
fnrent,  not  only  for  public  but  for  private  pur.- 
j  is  daily  drawing  nearer. :  The  streets  i !  various 
I  institutions;  plates  of  amusement;  tile  estab.: 
lents  of  the  wealthy;  many  of  these  arc  alrcad> 

Id  by' this  agent— or,  to  speak  more  correctly, 

|,o  -new  methods  of  developing  and  utilising  its 
ers  The  list  of  users  of  Electric  Lighting,  too,  is 
f  increasing,  thanks  to  the  sustained  efforts  of 

ntific  men  and  practical  mechanicians,  andj^tl^- 
ntions  and  improvements  which^Pjy'gJ^Jd  that 
.d  hy^h^iueans^Ia^^..  of  the  time  when : 

ire  within-^'"*"  _  „„rooscs,  and  under  all 
ficial  lights  the  exception.  ^  thc  timc 

n  these  circumstances  it  has  be  subject. 

f  arrived  when  a  journal,  dealing, ^1^^ 

ElfCtric  objccl  pf  tllis  journaj  to 


Elpctric  Li,8hti"®i.'"“thobCobiMtU  of  this  journal  to 
abllshedi  H  W,U  ^c  *'  J.  th  „„  and  in  t*«‘ 

rosy  be  introduced;*®  c  romc  ^  ^  ^  private ;  and 

SgSSsWggffl 

^aasps^SsgUSi 


our  object  to  avoid  them  as  far  as  possible,  to  turn 
wherever  practicable,  the  language  of  science tint 
language  which  shall  be  “  understanded  of  the  people. 

of. the  public,  in  the  hope  that  It  may  desene  at 
obtain  their  support  and  goodwill. 

TO 

of  a  public,  accountant,  .  circulated— n 

°o  copies  whi<«have  ^’j  ^dcli  have  be 
merely  »o  th.  —  *  h above-i.  is  note 

printed.  .And-aswelave  ^  ot  the  prodi 

t”ons  of  those  who  advertise  with  iis.jmdtq  ignore^ 

>  but  we  hope  ,0  (0  our  circulation,  i 

;  -stttSSX? 

;'d: 

a  formation,  and  not  a  mere  trap  for  catcln  g 


tHE  GOVERNMENT  BlbL- 
r  visions  of  tbc  Government  Li««*  ^ 


-  .  '  SEPTEMBER  ,6,  1882 

Jw’TSil  ' 


si — ,ii - 


I  THE  BABCC 

WATER  TUBE! 


ENGINEERING 


MMn 


ENGINEERING. 


1 

i  ■  j=wjlp)#4 

®iil«  ^ 

Lijggd^ Wmi 

A  Bulletin  of  Attractive  Features  provided  for  the 
■Sixty-Sixth  Volume. 

1893  ¥- 


THE  CortPANION  announces  for  its  66th  year  no  change  of  policy.  What  it  itas 
been  in  the  past,  what  lias  commended  it  to  more  than  half  a  million  paying  annual 
subscribers,  it  will  continue  to  he,  with  all  the  additions  in  tile  interest,  value  and 
variety  of  its  contents  that  experience  and  enterprise  can  suggest.  The  character  of 
some  of  the  special  articles  by  famous  writers  secured  for  the  forthcoming  66th  vol¬ 
ume,  is  indicated  on  the  following  pages. 


It  gives  more  rending  matter  of  an 
excellent  quality  at  a  lower  price  than  any 
weekly  paper  published.  Every  issue  is  well 
illustrated,  and  beautifully  piinted  on  fine 
paper.  Each  year  it  contains  more  reading 
Ilian  any  Sq.oo  magazine,  and  the  price  is 


For  Young  People  it  creates  a  desire 
for  higher  and  better  class  of  reading  and 
every  member  of  tile  family  will  discover 
articles  of  special  interest  for  him  or  her. 
Though  tlie  paper  is  designed  for  young 
people,  it  lias  become  known  as  a  "National 
Family  Paper.” 


(live  a  trlnl  order  to  your  Newsdealer  lor  a  copy  each  week  for  5  weeks,  so  that 
you  may  test  its  merits  and  become  acquainted  with  the  paper.  At  tile  expiration  of 
Ibis  short  term  we  trust  you  will  have  been  so  well  pleased  that  you  will  decide  to 
have  it  continued  in  your  family.  Newsdealers  also  take  Yearly  Subscriptions. 


The  Youth’s  Companion 


Boston,  Mass. 


FOR  SALE  AND  SUBSCRIPTIONS  TAKEN  BY 


cre 


cc<« 


y 


izza 


ELECTRIC  LIGHTING 


METALLURG  Y  AND  MINING. 


£vs  g~ 

/mw,  dMeircsaUeoUon^siliowii  *$"*  { univtrstlU  dts 

SSlfS Kec “■  ■*  >'h° 

i**?  -sss  „i!°,/umc*y 

S^Br’SiBSjg 

ISSSSirlfllsi 

ih“^o“,i^”oS5cnir,°cd”„iT:  ?™7  £7°,', 


ENGINEER  ING,  I  [Oct.  17,  1884.  |  ’ . 

ELEOTttIOJ|JallTINa  NOTES.  ^  dSSJlta 

rSSISSSS  ISHiiSSi 

SswjTSrfij?!^  srirsa. ss 


~fl,,  ~z/-'  etc^- 


13.  L’application  <lii '  coiiranl  elcclriquc  pour  I’a. 

!  itoelim  dca  inccndies,  par  A.  Tolhnuscn,  (Telegraphic 
Journal,  vol.  Ill,  page  285). 

Un  thermomitre  fcriiio  pnr  l'nugmontation  lie  In 
tcinpdrature  lo  courant  d’unc  pile  qui  met  un  dlectro- 
j  rriinnnt  en  mouvoment  Cclui-ci  ouvro  lo  robinct  d’un 
tuynu  qui  cat  en  communication  avee  une  clmudiirc  A 
!  TnIlcur'  La  vapour  renfplit  bicirtOt  tout  l'nppnrtoincnt 
i  oil  l’incendio  s’eat  diclard  otitoint  lofeu.  Co  quo  cctte 
!  application  prdsente  do  nouvcnu:cst  la  combinaison  do 


AAAAAaA* 


ISItURSTS  DUPLEX  INDUCTION 
MACHINE. 


1 

[B II 

'll- 

•  IfJ 

iMi 

WILLIAMS  &.  PLUM, 

777  Broad  st-  Newark,  N.  J„ 
STATIONERS  and  BOOKSEttERS, 
MERCANTILE  PRINTERS, 


OPPENHEIMER'S  LIGHTNING  GUARD 
’  •  INSULATOR.  :  .  yjtf 

is  invention' is  designed  to  obvinto  tho  incin-' 
lienee -  which  arises  in 1  working  telegraph  •  lines 
™  tho  breakage  of  insulators  by.liglttning,  and  a 
sequent  making  or  earth  contact  by  tho  conduct-' 
wires.  ,  In  order  to  avoid,  thin  kind  of  fault  a 
Umng  discharger  is  introduced  in  the  interior 
cl?ng5U,at0r'  "hich  58  Providcd  with  a  metallic 
'ho  accompanying  fig.’  shows  a  section  of  the 
iroved  insulator.  .  .  ■ 

>t  a  is  the  metallic  insulator  pin  connected  with 
post,  supposed  in  this  case  to  be  of  metal,  and 


i^siiisss 

^  of  thc<groove)jsCCt "d' ‘horoughiy°the!ow2r°Srt 
S  oo>e  is  cunedy  as  shown^that  the  lino 

1"  May  1.1870.I  THE  TELEGRA1 


^^^Ur^S^^Non'C°ndU^°" 


OCTOBER 


WILLIAMS  &  PLUIV 

777  Broad  St,  Nowark.  N  J 
STATIONERS  an<t  BQQKSEtEEl 
-J-  mercantile  printers, 


>■  HULETT,  55  and  56,  HIGH  HOLBORN,  LONDON. 


WILLIAM  SUGG’S 


VINCENT  WORKS,  VINCENT  STREET/ WESTMINSTER,  S.W. 


:  fir  ,i‘iora  5,ul 

1  ZZ  T1 fi0Ul1‘  Mctr0Hil‘"i  Slmroho 
,  er‘  i,*.u  on/y  opposition  which  now  roi 


;  ;  ‘ :  iimoiimsoi  capital  to  l»o  allotted  to 
>  but  »t  could  easily  bo  settled  by  a  calculate 
,  engineers.  1  ho  London  Company  may  be  e 
\  How  their  districts  were  allotted,  when  tin 
i  J?10  ,nmle»  wo  couW  Mover  imagine, 

i  of  Hie  ihames  now  properly  belongs  to  tbo 
:  who  l,«vo  thn  mentis  of  r.imisl.ing  o  8,,,,, 
llmt  urea,  wlulo  that  on  the  south  would 
Pluciux  Cominny,  who  would  profit  by 
manufacturing  power  of  the  Nino  Kims  woi 


TO  CORRESPONDENTS. 


SwS?*"  &Un 

A'r 

THE  JOURNAL  OF  GAS  LIGHTING, 

_  WATER  SUPPLY,  &  SANITARY  IMPROVEMENT. 

XOESDAr,  JUXB  10,  1810. 

Circular  io  <Sns  Companies. 


about  to  appeal  against  tbo  judgment  of 
Hcnch  in  their  attempt  to  sot  aside  tho 
Hunt.  As  tho  caso  is  still  sub  judlcc,  its  lei 
bo  referred  to.  Wo  object  to  tho  prot 
expenses,  whichever  way  the  ultimata  dec 
upon  that  unfortunate  overburdened  ani 
Birmingham,  as  wo  said  last  week,  hud  i 
whem  tho^  Corporation  purchased  the  Stal 

tration  adopted  by  Sir  Henry  Hunt  canno 
upon,  ns,  whother  the  fragments  of  the  un 
sold  nt  a  proporlioimto  price  to  that  paid 
Corporation,  or  whether  they  should  now  In 
increased  value,  is  a  question  which  tho  C 
have  to  consider.  All  that  can  be  said  no' 
blessing  when  this  litigation  is  settled,  am!  f 
get  their  several  undertakings  into  fair  wor 


July  ib,  1879-  &mcriom  (Bus  flight  glcmvuat 


.  M.  CALLENDER  &  CO., 
Editor— G.  WAIUIEN  DRESSER. 
At  No,  42  Pino  Struct,  Now 


reC",dJ!T^i»ttrl,IP01  Wnr^hl.ch  h™  ^*n ‘)nt 


&.wct‘xcau  (5as  g^ight  gouvnaj 


y  '  "/J-1  THE  JOURNAL  OF  0A8  LlflUTINO,  WATER  SUPPLY.  & 


Our  renders  will  soo  in  another  columi 
Livesoy,  in  reply  to  tlio  rotnnrlts  of  Mr. 
i  mooting  of  tliu  Jlritish  Association  of  0 
to  tlio  notion  Inkon  by  tlio  Gns  mill  Wile 
•ton  rcsjiocting  tlio  applications  of  Qnn  C 
to  supply  tlio  olootriu  light.  It  tvns  nitvi 
with  tin  wliotlior  or  not  tlio  thirty-four  0 
proceed  with  tlio  olntmes  intoiidod  to 
“supply”  the  elect™  light.  It  is  quit 


THE  JOURNAL  OP  GAS  LIGHTING, 

_  WATER  SUPPLY,  &  SANITARY  IMPROVEMENT. 

TUESDAY,  JULY  8,  1B7Q. 

Circular  <c  (5na  dowmmtcs. 


ply  (ho  now  lighL  wherover  it  might  In 
mul  profitable  to  employ  it.  The  ropn 
Committee  shows  clearly  tlmt  the  netio: 
nml  Water  Companies  Association  was  coi 
that  onr  present  knowledgo  of  tho  olei 
justify  nnv  legislation  on  the  matt  or,  am 
for  ii  much  more  extended  development  c 
Parliament  can  coufor  any  exclusive  po 
now  itluminnnt. 

Thero  was  a  large  sale  of  shares  in  tho 


SV!£  Vik®i«utnrlo  ®ns  domunnits. 


vw 


L„»^‘ 


r’/---  -  ^v^/OvWS 

Ikvv^vv^w^ww* 


.w.'-  .-  »U Ww„  ,Ji 


,  •  :  •  ‘"I 

-WwWw^u  - :  ;-  -  1 


;vvy^^^0PI 


y  *,  s- . ^w^wwwv^v^; v 

*y Www^'5'w wg i »' v v*  vcv»>: : 

t-'^vN^^sVss^6W^V^Vuww^vv^wWywv^ 

■ '  ;Wy u wv^vv  v  v v  v/^VuwWW\g^ w y w w v  y  v  w  ^  v  v  ^  J 


SANITARY  IMPROVEMENT. 


THE  ENGINEER. 


THE  JOURNAL  OF  GA3'  LIGHTING,  WATER^  SUPPLY,  &  SANITARY  IMPROVEMENT 


Vgnsnnd  electricity.  Perhaps 
I  showing  how  baseless  were 
Y*  ami  tlio  ijntiio  which  result  a 
,0M*  ‘°  utilizing  the  iiifncmatto 


T0^°  °H^E  S  P  OKDi;  WI 8.  ~ 


THE  JOURNAL  OP  GAS  LIGHTING, 

WATER  SUPPLY,  &  SANITARY  IMPROVEMENT. 

TnSSDAT,  MAY  j8,  1680. 

Cirralar  io  <§„■,  ©ompnnits. 


is  ,lm<: 11  '»“?  Jwm*  tlio  successful  mill  wt.|L 
(9  Jiames  which  Iiavo  been  tlio  objects  of  fl; 
II  {‘Knolf,  mtlioi-  (linn  llinso  nWn,,  fmni  nnv 

II  ™  '»»  "'""IUn.1  . . old  oc 

a  largei.  \\  0  distinctly  mirsthm  tho  horn,  i 

i  p '' 

*  of  gas— is,  in  the  vimL  mnjority  of  cisw 


Z!I?VCo,,,|'",!)'  0,,°  V  <>«°  iRcso  t! 


May  3,  1880.  gnUCVXCaU  (Si 


SUnxvicaxi  ©as  fiiglxt  gonrnal 


giinmcan  ©ns  f&glxt  gmu*ualf 


Jan.  3,  1881. 


gt-mcritim  (j5;ts  gj^gfrt  gjmmnxt. 


1 


Beaux-ari 


Industrie  —  My 


militaire  —  MiSdecin 


j  L’intcnsitd  des  soubrcsauts  soralt  varlnMn  out 


I’OIIIGINE  |)U  MfiTISlIE  TMEST1IE 


lozfr. 


5  KBWARK  BMK  BUDERf  k  BLUR  BOOK  ilAMTACTOItV. 

JOB  4  MEHCANTILE  PRINTERS. 

'  WILLIAMS  &  PLUM, 

STATIONERS  end  BOOKSELLERS, 
mercantile  printers, 


»iiwur:uu  uu  rams  ue  ominous  ou  il'Arlincourt  so 
rouve  dans  la  diagonalo  du  pant,  pour  lo  cournnt  d’ar- 
ivde  cut  Instrument  ost  pined  dans  une  branclio.  L'a- 
antago  de  co  double  jiont  de  Wheatstone  consiste  on 
o  qu’il  n’y  a  quo  la  rdsistanco  d'uno  scale  des  brandies 
pposdes  A  la  ligne  qut  domando  uno  correction  si  la  rdsis- 
ince  de  la  ligno  vnrio  et  que  cheque  station  pout  Ala- 
lir  l’Aquilibre  des  resistances  inddpendamment  de  l'autre 
ation.  L’article  so  termine  par  des  indications  concer- 
»nt  l'dchango  des  ddpdchos  sur  les  lignes  A  double 
ansmissiou. 

3. -La  duplex  system  de  M.  Smith.  (Telegrapher, 

1  XI,  page  220).  ’ 

L’invcntour  s'est  servi  du  diagrnmnie  cmployA  par 
'ggondorff  pour  comparer  les  forces  Alcctro-motriccs 
dcus  piles.  Le  systAme  so  compose,  commecelnide 
tarns,  d'nn  « sounder  n,  d’un  condcusateur  dgnl  cn 
tacitd  a  la  ligne  et  d’une  rdslshince  ndditionncllo.  Lo 
»is  (ou  le  rdeepteur)  a  denx  hdllccs.  Cheque  station 
pourvuo  do  deux  piles,  mnis  II  hnporto  peuqueles 
ix  stations  nient  les  mOmos  pOles  ou  les  pAlos  de  nom 
tore  on  contact  avoc  la  ligne.  Ce  systAme  aurait 

SKrirvn  tr?ntai,,',"“"d  “  n  51,5  «P*tawtd 
re  Nciv-Yorlq  et  Buffalo. 

£W«plex  Icligraphe  de  d'lnfreeille,  par  Hugh 
son.  (Telegrapher,  vol.  XI,  page  272).  b 

Actucllcniciit  cinq  diffdrontssystAincsdc  double  trans- 
smitsaut  c„  usage  (ln„s  pAm(!ri(p!  d|1  Nor(|j  |(, 

'  d  Sen',  m  t  leSySt6mo  ,lu  VM  de  Wheats- 
TuSn  p  i  -Sy  ?mCS  n"skins'  G«rrit  Smith 
oimln  °  .  Cm"!r  "  " lras  bcsoi" (le  sondensateurs  , 


montnS  qu’il  n’Atait  besoiu  quo  tie  trouver  nn  systAm 
pratique  de  double  tAIAgrnphic  dans  le  inCine  sens  pou 
obtemr  iinniiidiatcincnt  In  lAlAgraphie  quadruple  par  so 
application  au  systeme  de  tAIAgrnphic  cn  sens  contrnirt 
La  diOicuHA  du  probltine  de  la  qiiadniplcx  lAIAgrnphi 
reposo  done  iinlqiicment  dans  la  illflicultA  de  trouve 
nn  bon  systeme  de  tAIAgrnphic  double  dans  le  into 
sens.  Si  Ton  cmploio  trois  iliffArcntes  forces  de  cournnt 
11  est  presque  impossible  de  donner  au  rAglagc  de 
relais  une  sonsibilitA  suffisante  et,  si  Ton  se  sort  tli 
courants  alternant  cn  ‘direction,  l’un  des  relais  snbit  uni 
sccousse  qui  trouble  les  signnnx. 

MM.  Ellison  et  Prescott  ont  coroplAtomont  nban- 
donnA  la  voic  sulvie  par  les  autres  invcntcure.  Uncou- 
rant  d  uno  force  I  traverse  continucllcmcnt  la  ligne, 
qunnd  il  n  y  a  d’nbaissA  aucun  des  quatre  inanlpula- 
tcurs  des  deux  stations.  Par  le  premier  des  deux  nia- 
uiimlntcurs  d’nnc  station  on  pent  renverserce  courant, 
par  I  autre  on  nugmentc  la  force  du  courant  de  1  A  4 
sans  changer  la  polaritA  qui  cst  toujours  ilAtcrminAc 
par  la  position  du  premier  manipulatour.  A  l’autre  sta- 
tion  le  courant  parcourt  deux  relais,  Pun  polarlsA,  Pautrc 
ordinnirc  chacun  ouvrant  et  formant  nn  circuit  local. 
U  Circuit  loca!  du  relais  polarisA  cst  fcrmA  qunnd  le 
cournnt  cst  renvcrsA  par  le  premier  mnnipnlntcur,  mnis 
cc  courant,  lie  !a  force  i,  cst  trap  faiblc  pour  nglr  sur 
b!  relais  ordinaire.  L  armature  de  cc  dernier  cst  attirAc 
81  forcn  du  courant  cst  augmentde  par 
e  econ.1  mampulatenr  de  1  a  4,  quelle  que  soil  la  di- 

on  nuul  '  m  C°  d0uWo  8yst4mc  081  ‘ninsformA 
en  quadruple  systimo  nar  rintcrmi«iin„  ,i„„  ,i _ i„:„ 


^uutuician:  .TTmir- 

DYNAMO-EtECTBIO  MACHINES. 


MACHINE  MAGN&T0-6LECTRIQ.UE  j 
db  'M.'oiii^eT 


.  riquc  dcs  machines  gdndralriccs  dVlcctricitd,P°nous  nous  ! 
j  faisons  un  devoir  do  Ini  donner  placn.  j 

jdlcctriquc,  la  machines  magncto-ilcctriqucs  scmblciU  dilab- 1 
i»!es  par  la  invemeurs,  bien  que,  ihcoriqucmcnt,  Ic  rendemem  i 
Je  cds  appareiis  dut  Olrc  supiricnr.  I 

!  Ids  machines  dpnamo-ilcctriqucs  doivcm  ca'cr  cii  mime  j 


THE  REDUCTION  RATIO  FOR  THIS  REEL  IS  16:1 


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COPYING  RESTRICTIONS 


Reel  duplication  of  the  whole  or  of 
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In  lieu  of  transcripts,  however, 
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FINANCIAL  CONTRIBUTORS 


PRIVATE  FOUNDATIONS 
Alfred  P.  Sloan  Foundation 
Charles  Edison  Fund 
The  Hyde  and  Watson  Foundation 
Geraldine  R.  Dodge  Foundation 


PUBLIC  FOUNDATIONS 
National  Science  Foundation 
National  Endowment  for  the  Humanities 


PRIVATE  CORPORATIONS  AND  INDIVIDUALS 


Matsushita  Electric  Industrial  Co.,  Ltd. 
McGrawEdison  Company 
Middle  South  Services,  Inc. 


Alabama  Power  Company 
Amerada  Hess  Corporation 
AT&T 

Association  of  Edison  Illuminating  Companies 

Battelle  Memorial  Institute  Foundation 

The  Boston  Edison  Foundation 

Cabot  Corporation  Foundation 

Carolina  Power  and  Light  Company 

Consumers  Power  Company 

Coming  Glass  Works  Foundation 

Duke  Power  Company 

Edison  Electric  Institute 

Exxon  Corporation 

General  Electric  Foundation 

Gould  Inc.  Foundation 

Gulf  States  Utilities  Company 


Minnesota  Power 

New  Jersey  Bell  Telephone  Company 
New  York  State  Electric  &  Gas 
Corporation 

North  American  Philips  Corporation 
Philadelphia  Electric  Company 
Philips  International  B.V. 

Public  Service  Electric  and  Gas  Company 

RCA  Corporation 

Robert  Bosch  GmbH 

Savannah  Electric  and  Power  Company 

Sobering  Plough  Foundation 

Texas  Utilities  Company 


BOARD  OF  SPONSORS 


Rutgers,  The  State  University  of 
New  Jersey 

Edward  J.  Bloustein 
T.  Alexander  Pond 
Tilden  G.  Edelstein 
Richard  P.  McCormick 
James  Kirby  Martin 
New  Jersey  Historical  Commission 
Bernard  Bush 
Howard  Green 


National  Park  Service.  Edison 
National  Historic  Site 
Roy  W.  Weaver 
Edward  J.  Pershey 

Lynn  Wightman 
Elizabeth  Albro 
Smithsonian  Institution 
Brooke  Hindle 
Bernard  Finn 


EDITORIAL  ADVISORY  BOARD 

James  Brittain,  Georgia  Institute  of  Technology 
Alfred  D.  Chandler,  Harvard  University 
Neil  Harris,  University  of  Chicago 
Thomas  Parke  Hughes,  University  of  Pennsylvania 
Arthur  Link.  Princeton  University 
Nathan  Reingold,  Smithsonian  Institution 
Robert  C.  Schofield,  Iowa  State  University 


CORPORATE  ASSOCIATES 

William  C.  Hittinger  (chairman),  RCA  Corporation 
'Arthur  M.  Bueche,  General  Electric  Company 
Edward  J.  Bloustein,  Rutgers.  The  State  University  of  N  J. 
Cees  Bruynes,  North  American  Philips  Corporation 
Paul  J.  Christiansen.  Charles  Edison  Fund 
Philip  F.  Dietz,  Westinghouse  Electric  Corporation 
Paul  Lego,  Westinghouse  Electric  Corporation 
Roland  W.  Schmitt,  General  Electric  Corporation 
Robert  I.  Smith.  Public  Service  Electric  and  Gas  Company 
Harold  W.  Sonn,  Public  Service  Electric  and  Gas  Company 
Morris  Tanenbaum,  AT&T 


a 


Jvfcoru  rape^b 


A  SELECTIVE  MICROFILM  EDITION 
PARTI 
(1850-1878) 


Thomas  E.  Jeffrey 

Microfilm  Editor  and  Associate  Editor 


Paul  B.  Israel 
Assistant  Editor 
Assistant  Editors: 
Toby  Appel 
Keith  A.  flier 
Andre  Millard 


Susan  Schultz 
Assistant  Editor 
Research  Associates: 
Robert  Rosenberg 
W.  Bernard  Carlson 


Student  Assistants 

John  Deasey  Pamela  Kwiatkowski 

Leonard  DeGraaf  Joseph  P.  Sullivan 

David  Fowler  Barbara  B.  Tomblln 

Leonard  S.  Reich,  Associate  Director  and  Associate  Editor 
Reese  V.  Jenkins,  Director  and  Editor 


Sponsors 

Rutgers,  The  State  University  of  New  Jersey 
National  Park  Service,  Edison  National  Historic  Site 
New  Jersey  Historical  Commission 
Smithsonian  Institution 


University  Publications  of  America 
Frederick,  Matyiand 
1985 


Association  for 
Information  and  Image 
Management 


MS303-1980 


Centimeter 


Inches 


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m  sse 


I LM  N  U